爱站程序员基地前言：你说这是你的大作业？＞＞＞虽然看起来很简单，很普通，但它确实是大作业
，你可以从中发现无限乐趣…
ヾ(◍°∇°◍)ﾉﾞ——
目录：
- 【1】客户需求描述（题目描述）：
- 【2】难点分析：
- 难点1️⃣(题目本身）
- 难点2️⃣(卷神同学）
- 1️⃣Labray.h
- 1️⃣：开始界面
【1】客户需求描述（题目描述）：
【2】难点分析：
难点1️⃣(题目本身）
-
最开始看到这个作业时，我是很不以为然的，毕竟都是提前自学过的了( •̀ ω •́ )✧，可——
-
我还是太弱小了ಥ_ಥ
-
看看这变态需求
-
1:支持大数据，比如书籍记录突破百万，用户数量突破万级规20000模
-
2:搜索时性能考察，调查、思考、设计加强搜索性能的方式
-
3.样本数据
难点2️⃣(卷神同学）
- 同学A😎：我要用Qt，做一个。
很多同学不知道Qt是什么，这里简单地介绍一下。
> < 这是Qt的软件
这：你可以在Codeblock看到它
》这是简单的界面，他教我写的
> < 这是Qt的软件
还有…
- 同学B😼：我要创个桌面程序!!!
可能还有朋友不知道C++怎么弄桌面应用
看这里——
`
- 同学C😈：你们都在编程，我整个网页
他自学了前端，学了HTML，还参加过网页设计比赛
这是他发给我的软件
- 同学D👻：mySQL选手
这个是我猜的≡(▔﹏▔)≡
学院那么大，来个学完数据库的同学，不过分吧》》》》
我都来不及装软件ヽ（≧□≦）ノ
【3】开始——
世界纵已内卷，编程不容躺平
编程必须强！！！💥🐉
【4】代码实现：
注：使用CB编写，VS需要重写时间函数
Libray（图书馆），Labray属拼写错误
1️⃣Labray.h
#ifndef LABRAY_H#define LABRAY_H#include<iostream>#include<string>#include<cstring>#include<windows.h>#include<functional>#include<algorithm>using namespace std;#include<vector>#include<ctime>#include<unordered_map>//----------------------------------引用的库//界面美化void toxy(int x, int y); //将光标移动到X,Y坐标处void SetColorAndBackground(int ForgC, int BackC); //设置颜色//----------------------//-------图书类，管理员类，读者类的设定class Book {public:string Book_name;string IBSN;string writer;string classify;int cur_num;Book() {}Book(string n,string i,string w,string c,int num):Book_name(n),IBSN(i),writer(w),classify(c),cur_num(num){}};class Administrator{friend class Labray;public:string a_account;string a_code;Administrator() {};Administrator(string account, string code) :a_account(account), a_code(code) {}};class User{friend class Labray;public:string u_account;string u_code;unordered_map<string,int>u_memo;unordered_map<string,int>u_back_memo;User(){};User(string account, string code) :u_account(account), u_code(code) {}};//-------//------------------------------class Labray{private:unordered_map<string, Administrator>Admins;//用哈希表查找，更加快unordered_map<string, User>Users;vector<Book>tmbook;vector<string>Borrow_memo;vector<string>Back_memo;string Landed_accout="0";//C++11标准，可直接这样初始化用，这里使用是为了后面的部分操作//---------------------------void init_book();void init_Admin();void init_User();void init_Borrow_memo();void init_Back_memo();void Save_Book();void Save_Admins();void Save_Users();void Save_Borrow_memo();void Save_Back_memo();//----------------------void Search_thebook();void myover(); //强制退出//---------------------void AdminStart();void UserStart();string getCur_time();public:Labray();void Landing();};#endif // LABRAY_H
2️⃣Labray.cpp
#include "Labray.h"#include<windows.h>#include<fstream>constexpr auto Bookfile = "H_books.txt";constexpr auto Adminfile = "Admins.txt";constexpr auto Usersfile = "users.txt";constexpr auto Borrowfile="Borrow_memo.txt";constexpr auto Backfile="Back_memo.txt";//----------------------------------辅助函数，帮助查找class help_find{//，辅助find_if查找，无需泛型编程，就不用写模板private:string name; //你可以用适配器，只要你能正确匹配函数即可public:help_find(string t_name):name(t_name){};bool operator()(const Book& book) {if (book.Book_name == name)return true;else return false;}};int str_to_num(string str){int jie=0;for(int i=0;i<str.size();i++){jie=jie*10+(str[i]-'0');}return jie;}//-----------------------------------------------------设置void SetColorAndBackground(int ForgC, int BackC) {WORD wColor = ((BackC & 0x0F) << 4) + (ForgC & 0x0F);SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), wColor);}void toxy(int x, int y) //将光标移动到X,Y坐标处{COORD pos = { x , y };HANDLE Out = GetStdHandle(STD_OUTPUT_HANDLE);SetConsoleCursorPosition(Out, pos);return ;}//对界面设置函数的定义,这两个函数，记住就行了，现阶段不要求理解//----------------------------------------------------//--获取时间string Labray::getCur_time(){time_t t; //typedef long time_t;time(&t); //获取系统时间char* str = ctime(&t); //将时间t转换为字符串return str;}//-------------------关键的构造函数，初始化Labray::Labray(){ifstream ifs1;ifs1.open(Bookfile, ios::in);if (!ifs1.is_open()) {//情况一：文件未创建，即文件不存在//初始化属性cout << "-----------------------------------------------------" << endl;cout << "提示：--！！！图书信息文件未创建，运行系统可自动生成文件！！！ --" << endl;cout << "-----------------------------------------------------" << endl;ifs1.close();return;}//2.文件存在，但数据为空char ch;ifs1 >> ch;if (ifs1.eof()) {cout << "--------------------------------------------------------" << endl;cout << "提示：--！！！图书馆尚无存书，等待管理员添加图书！！！--" << endl;cout << "--------------------------------------------------------" << endl;ifs1.close();return;}//图书馆有图书，我们需要把文件中的图书信息读到程序中ifs1.close();this->init_book();this->init_Admin();this->init_User();this->init_Borrow_memo();this->init_Back_memo();SetColorAndBackground(1,0);cout << "------------------------- " << endl;cout << "[H]系统现有【用户人数】为：" << this->Users.size() << endl;cout << "[H]系统现有【管理员人数】为：" << this->Admins.size() << endl;cout << "[H]系统现有【图书种类】为：" << this->tmbook.size() << endl;cout << "------------------------- " << endl;SetColorAndBackground(7,0);cout << endl;}//---------------------void Labray:: Save_Book() {//保存图书文件ofstream ofs;ofs.open(Bookfile, ios::out);//写文件//将每个人的数据写入文件中for (int i = 0; i < this->tmbook.size(); i++) {ofs << this->tmbook[i].Book_name << ' '<< this->tmbook[i].IBSN << ' '<< this->tmbook[i].writer<<' '<<this->tmbook[i].classify <<' '<<this->tmbook[i].cur_num<<endl;}ofs.close();return;}void Labray::Save_Admins() {ofstream ofs;ofs.open(Adminfile, ios::out);//写文件//将每个人的数据写入文件中for (pair<string,Administrator> it:this->Admins) {ofs << it.second.a_account << ' '<< it.second.a_code<< endl;}ofs.close();return;}void Labray::Save_Users() {ofstream ofs;ofs.open(Usersfile, ios::out);//写文件//将每个人的数据写入文件中for (pair<string, User> it : this->Users) {ofs << it.second.u_account << ' '<< it.second.u_code << endl;}ofs.close();return;}void Labray::Save_Borrow_memo(){ofstream ofs;ofs.open(Borrowfile,ios::out);//写入借阅记录for(string it:this->Borrow_memo){ofs<<it<<endl;}ofs.close();return;}void Labray::Save_Back_memo(){ofstream ofs;ofs.open(Backfile,ios::out);//写入借阅记录for(string it:this->Back_memo){ofs<<it<<endl;}ofs.close();return;}void Labray::init_book() {ifstream ifs;ifs.open(Bookfile, ios::in);string name;string IBSN;string writer;string classify;string tmp_cur_num;while (ifs >>name && ifs >>IBSN && ifs >>writer && ifs >>classify && ifs >>tmp_cur_num) {int cur_num=str_to_num(tmp_cur_num);Book tmp(name,IBSN,writer,classify,cur_num);this->tmbook.push_back(tmp);}ifs.close();return;}void Labray::init_Admin() {ifstream ifs;ifs.open(Adminfile, ios::in);string account, code;while (ifs >> account && ifs >>code) {Administrator tmp(account,code);this->Admins[tmp.a_account]=tmp;}ifs.close();if(this->Admins.empty()){Administrator tmp("20220101","123456");this->Admins["20220101"]=tmp;//添加默认管理员this->Save_Admins();}return;}void Labray::init_User() {ifstream ifs;ifs.open(Usersfile, ios::in);string account;string code;while (ifs >> account && ifs >> code) {User tmp(account,code);this->Users[tmp.u_account] = tmp;}ifs.close();return;}void Labray::init_Borrow_memo() {ifstream ifs;ifs.open(Borrowfile, ios::in);string informantion;while (getline(ifs,informantion)) {this->Borrow_memo.push_back(informantion);}ifs.close();return;}void Labray::init_Back_memo() {ifstream ifs;ifs.open(Backfile, ios::in);string informantion;while (getline(ifs,informantion)) {this->Back_memo.push_back(informantion);}ifs.close();return;}//以上实现文件交互//--------------------------------------------------//---------void Labray::myover(){Sleep(500);float x,y,a;for(y=1.5;y>-1.5;y-=0.1){for(x=-1.35;x<1.5;x+=0.05){a=x*x+y*y-1;putchar(a*a*a-x*x*y*y*y<0.0?'*':' ');}system("color 0c");putchar('\\n');}cout << "欢迎下次使用！！！" << endl;exit(0);}void Labray::Landing() {cout << "-----------------------------------------------------" << endl;cout << "-------------欢迎使用《H_de图书馆系统》---------------" << endl;cout << "-----------------------------------------------------" << endl;cout << "请选择--登陆模式:" << endl;SetColorAndBackground(6,4);cout << endl;cout << "》】-------------------【《" << endl;//画个小老虎cout << "| 王 |" << endl;cout << "| ---- ----- |" << endl;cout << "| |0 0| |" << endl;cout << "| [][] |" << endl;cout << "|---------vvvvvv----------|" << endl;cout << "|-------------------------|" << endl;cout<<endl;SetColorAndBackground(7,0);BigFlag:cout << "请输入你的登陆模式——pleace input you choice!!!" << endl;cout<<"******************************"<<endl;cout <<"-[0]------管理员登陆--/;"<<endl;cout<<"-[1]---------读者登陆/;"<<endl;cout<<"-[2]--------注册用户账号/;" << endl;cout<<"******************************"<<endl;char flag = '0';cin >> flag;//登陆分流的标识string you_account;string you_code;//---------管理员身份if (flag=='0') {Flag0:SetColorAndBackground(9,0);cout << " ------------------------------------------------" << endl;cout << " 》》》管理员登陆《《《 " << endl;cout << " ------------------------------------------------" << endl;SetColorAndBackground(7,0);string jd="0";cout<<"选项..."<<endl;cout<<"退出程序——【输0】"<<endl;cout<<"继续程序——【非0】"<<endl;cout<<"输入选项..."<<endl;cin>>jd;if(jd=="0")this->myover();cout << " 请输入你的账号(教师编号/学生学号):...." << endl;cout << " ------------------------------------------------" << endl;cin >> you_account;Sleep(500);cout << " ------------------------------------------------" << endl;cout << " 请输入你的密码（用户默认密码为123456)...." << endl;cout << " ------------------------------------------------" << endl;cin >> you_code;cout << " ------------------------------------------------" << endl;if (!this->Admins.count(you_account)) {SetColorAndBackground(7,4);cout << " 没有该账户存在！！！" << endl;SetColorAndBackground(7,0);system("pause");system("cls");goto Flag0;}else {if (this->Admins[you_account].a_code != you_code) {SetColorAndBackground(7,4);cout << "》》账号存在，但密码错误《《" << endl;SetColorAndBackground(7,0);system("pause");system("cls");goto Flag0;}else {SetColorAndBackground(4,0);cout << "！！欢迎使用管理员身份登陆系统！！" << endl;this->Landed_accout = you_account;this->AdminStart();}}}//---------读者身份else if(flag=='1') {Flag1:SetColorAndBackground(9,0);cout << " -----------------------------------------------------" << endl;cout << " 》》》读者登陆《《《 " << endl;cout << " -----------------------------------------------------" << endl;SetColorAndBackground(7,0);string jd="0";cout<<"选项..."<<endl;cout<<"退出程序——【输0】"<<endl;cout<<"继续程序——【非0】"<<endl;cout<<"输入选项..."<<endl;cin>>jd;if(jd=="0")this->myover();Sleep(500);cout << " 请输入你的账号(教师编号/学生学号):...." << endl;cout << " -----------------------------------------------------" << endl;cin >> you_account;Sleep(500);cout << " -----------------------------------------------------" << endl;cout << " 请输入你的密码（用户默认密码为123456)...." << endl;cout << " -----------------------------------------------------" << endl;cin >> you_code;cout << " -----------------------------------------------------" << endl;if (!this->Users.count(you_account)) {cout << "没有该账户存在！！！" << endl;system("pause");system("cls");goto Flag1;}else {if (this->Users[you_account].u_code != you_code) {cout << "》》账号存在，但密码错误《《" << endl;system("pause");system("cls");goto Flag1;}else {SetColorAndBackground(4,0);cout << "！！欢迎使用学生身份登陆系统！！" << endl;this->Landed_accout = you_account;this->UserStart();}}}else if(flag=='2') {SetColorAndBackground(4,6);cout << "=================================" << endl;cout << "提示：欢迎您注册HNU图书馆系统账号" << endl;cout << "=================================" << endl;SetColorAndBackground(7,0);string jd="0";cout<<"选项..."<<endl;cout<<"退出程序——【输0】"<<endl;cout<<"继续程序——【非0】"<<endl;cout<<"输入选项..."<<endl;cin>>jd;if(jd=="0")this->myover();string you_U_account;cout << "请输入您的账号....." << endl;cin >> you_U_account;if(this->Users.count(you_U_account)){cout<<"已有该账号存在，本次操作自动撤销!"<<endl;}else{cout << "请输入您的密码....." << endl;string you_U_code;cin >> you_U_code;User tmp(you_U_account, you_U_code);this->Users[you_U_account] = tmp;this->Save_Users();cout << "注册成功！请重新登陆系统." << endl;flag = '1';}system("pause");system("cls");goto Flag1;}else {SetColorAndBackground(0,6);cout << "警告！！！选项输入错误！请重新输入" << endl;SetColorAndBackground(7,0);system("pause");system("cls");goto BigFlag;}}//----------------------------------------------------------------------------------------------------//难点图书查找void Labray::Search_thebook() {Flag:cout << "检索方式:::::::[A].书名(匹配检索) [B].作者名(匹配检索) "<<endl;cout<<"[C].IBSN/ISSN（精确检索） [D].分类号(精确检索) [E]信息精确搜索 [F]分类号(模糊检索) " << endl;cout << "输入检索选项......" << endl;char ch;cin >> ch;if (ch == 'A') {string Bname;cout << "请输入您要检索的图书名称..." << endl;cin >> Bname;bool flag=0;for (Book it : tmbook) {if (it.Book_name.find(Bname)!=string::npos) {if(!flag)cout << "检索结果如下>>>>" << endl;flag = 1;cout <<"《"<< it.Book_name<<"》" << ' ' << it.IBSN << ' ' << it.writer << ' ' << it.classify<<' '<<"现有数量:" <<it.cur_num<< endl;}}if (!flag) {cout << "未找到相关图书!" << endl;}}//------------------------------------------------------else if (ch == 'B') {string writer_name;cout << "请输入您要检索的图书的作者/编者/译者名称..." << endl;cin >> writer_name;bool flag = 0;for (Book it : tmbook) {if (it.writer.find(writer_name)!=string::npos) {if (!flag)cout << "检索结果如下>>>>" << endl;flag = 1;cout <<"《"<< it.Book_name<<"》" << ' ' << it.IBSN << ' ' << it.writer << ' ' << it.classify<<' '<<"现有数量:" <<it.cur_num<< endl;}}if (!flag) {cout << "未找到相关作者对应的图书!" << endl;}}else if (ch == 'C') {string the_IBSN;cout << "请输入对应的IBSN/ISSN编号..." << endl;cin >> the_IBSN;bool flag = 0;for (Book it : tmbook) {if (it.IBSN ==the_IBSN) {if (!flag)cout << "检索结果如下>>>>" << endl;flag = 1;cout <<"《"<< it.Book_name<<"》" << ' ' << it.IBSN << ' ' << it.writer << ' ' << it.classify<<' '<<"现有数量:" <<it.cur_num<< endl;}}if (!flag) {cout << "未找到相关IBSN/ISSN对应的图书!" << endl;}}else if (ch == 'D') {string the_classify;cout << "请输入对应的分类号！！！" << endl;cin >> the_classify;bool flag = 0;for (Book it : tmbook) {if (it.classify == the_classify) {if (!flag)cout << "检索结果如下>>>>" << endl;flag = 1;cout <<"《"<< it.Book_name<<"》" << ' ' << it.IBSN << ' ' << it.writer << ' ' << it.classify<<' '<<"现有数量:" <<it.cur_num<< endl;}}if (!flag) {cout << "未找到相关分类号对应的图书" << endl;}}else if(ch=='E'){cout<<"1s后启用信息精确搜索。输入一条您已知的关于该图书的信息（作者/书名/ISBN...）。系统自动为您搜索相关结果"<<endl;Sleep(1000);system("cls");SetColorAndBackground(8,0);string information;toxy(0, 8);printf("请输入您要查询图书的信息：");cin >> information;;toxy(0, 10);printf("正在查询....");Sleep(500);int i=12;toxy(10, 5);printf("***********************************************图书总览******************************************************");toxy(10, 8);printf("-------------------------------------------------------------------------------------------------------------");toxy(10, 9);printf(" 书名 ISSN/IBSN 作者名 分类号 现有数量 ");toxy(10, 10);printf("-------------------------------------------------------------------------------------------------------------");bool flag=0;cout<<endl;for(Book& it:this->tmbook){if(it.Book_name==information|| it.IBSN==information || it.writer==information||it.classify==information){toxy(10, i);flag=1;cout<<"《"<<it.Book_name<<"》"<<" "<<it.IBSN<<" "<<it.writer<<" "<<it.classify<<"num:"<<it.cur_num<<endl;}}if(!flag){cout<<"空空如也的查找结果"<<endl;}system("pause");system("cls");goto Flag;}else if(ch='F'){SetColorAndBackground(4,0);cout<<"使用分类号模糊搜索，自动匹配出符合分类条件的书籍。"<<endl;SetColorAndBackground(7,0);cout<<"分类规则如下："<<endl;cout<<"示例:MA001-AD01-E01,代表 [数学001]-[高等数学01]-[教材01],所代表的图书是《高等数学教材第1版》"<<endl;cout<<"简要描述："<<endl;cout<<"[1]:每个分类号有三级，其中的[字母]代表[种类]，[数字]代表[编号]"<<endl;cout<<"[2]:(0,1)字符代表第一个分类号，（6，7）字符代表第二个分类号，（11）字符代表第三个分类号"<<endl;cout<<"[3]:数字属于系统自动编排，不必详细了解其规则。"<<endl;cout<<"开始分类号模糊搜索..."<<endl;cout<<"分类号模糊检索将分三次，依次输入各级分类，每次输入一个子分类"<<endl;string jd="0";cout<<"选项..."<<endl;cout<<"终止程序——【输0】"<<endl;cout<<"继续程序——【非0】"<<endl;cout<<"输入选项..."<<endl;cin>>jd;if(jd=="0"){system("pause");system("cls");goto Flag;}string nums_class_1;cout<<"请输入第一级分类号。至少两位字母+至多位数字.如CD111，正确；AB11111错误"<<endl;cin>>nums_class_1;while(nums_class_1.size()>5){cout<<"请重新输入"<<endl;cin>>nums_class_1;}vector<Book>jie_1;for(Book it:this->tmbook){string tmp=it.classify.substr(0,5);if(tmp.find(nums_class_1)!=string::npos){jie_1.push_back(it);cout<<"《"<<it.Book_name<<"》"<<it.IBSN<<" "<<it.writer<<" "<<it.classify<<" num:"<<it.cur_num<<endl;}}cout<<"是否需要进入第二级搜索。"<<endl;cout<<"选项..."<<endl;cout<<"终止程序——【输0】"<<endl;cout<<"继续程序——【非0】"<<endl;cout<<"输入选项..."<<endl;cin>>jd;if(jd=="0"){system("pause");system("cls");goto Flag;}cout<<"进入第二级搜索..."<<endl;string nums_class_2;cout<<"请输入第二级分类号。至少两位字母+至多两位数字.如AB11，正确；A11111错误"<<endl;cin>>nums_class_2;while(nums_class_2.size()>4){cout<<"请重新输入"<<endl;cin>>nums_class_2;}vector<Book>jie_2;for(Book it:jie_1){string tmp=it.classify.substr(6,4);if(tmp.find(nums_class_2)!=string::npos){jie_2.push_back(it);cout<<"《"<<it.Book_name<<"》"<<it.IBSN<<" "<<it.writer<<" "<<it.classify<<" num:"<<it.cur_num<<endl;}}cout<<"是否需要进入第三级搜索。"<<endl;cout<<"选项..."<<endl;cout<<"终止程序——【输0】"<<endl;cout<<"继续程序——【非0】"<<endl;cout<<"输入选项..."<<endl;cin>>jd;if(jd=="0"){system("pause");system("cls");goto Flag;}cout<<"进入第三级搜索..."<<endl;string nums_class_3;cout<<"请输入第三级分类号。至少1位字母+至多两位数字.如A1，正确；A123错误"<<endl;cin>>nums_class_3;while(true){int size3=nums_class_3.size();if(size3<=3)break;cout<<"请重新输入"<<endl;cin>>nums_class_3;}vector<Book>jie_3;for(Book it:jie_2){string tmp=it.classify.substr(11,3);if(tmp.find(nums_class_3)!=string::npos){jie_3.push_back(it);cout<<"《"<<it.Book_name<<"》"<<it.IBSN<<" "<<it.writer<<" "<<it.classify<<" num:"<<it.cur_num<<endl;}}cout<<"三级搜索完毕。系统自动退出"<<endl;Sleep(500);system("pause");system("cls");goto Flag;}else {cout << "输入错误！请重新输入" << endl;system("pause");system("cls");goto Flag;}return;}//--------------------------------------------------开始管理员的操作void Labray:: AdminStart() {FLAGa: SetColorAndBackground(0,7);cout <<" --------------------------------- " << endl;cout <<" HUN图书管理系统——管理员模式 " << endl;cout <<" --------------------------------- " << endl;cout <<" *********管理员功能菜单********** " << endl;cout <<" 用户管理: " << endl;cout <<" 》》1:查看所有用户账号及密码 " << endl;cout <<" 》》2:修改用户账号/密码 " << endl;cout <<" 》》3:初始化用户账号/密码 " << endl;cout <<" 》》4:彻底删除用户 " << endl;cout <<" ------------------------------- " << endl;cout <<" 图书管理: " << endl;cout <<" 》》5:游览全部图书 " << endl;cout <<" 》》6:修改图书信息 " << endl;cout <<" 》》7.增添图书信息 " << endl;cout <<" 》》8.彻底删除图书 " << endl;cout <<" 》》9.搜索图书 " << endl;cout <<" 》》A.查看图书借阅记录 " << endl;cout <<" 》》B.查看图书归还记录 " << endl;cout <<" 》》C.清空图书借阅记录 " << endl;cout <<" 》》D.清空图书归还记录 " << endl;cout <<" 个人类： " << endl;cout <<" 》》E.注销账号 " << endl;cout <<" 》》F.更改密码 " << endl;cout <<" 管理员操作: " << endl;cout <<" 》》G.查看所有管理员信息 " << endl;cout <<" 》》H.添加新的管理员信息 " << endl;cout <<" 》》I.删除现存管理员信息 " << endl;cout <<" ---------------- " << endl;cout <<" 其他: " << endl;cout <<" 》》0.退出系统 " << endl;cout <<"请输入操作选项！... " << endl;SetColorAndBackground(7,0);char select;cin >> select;if (select == '1') {if (this->Users.empty()) {SetColorAndBackground(6,4);cout << "不好意思。系统暂无用户存在!" << endl;SetColorAndBackground(7,0);}else {for (pair<string, User> it : this->Users) {cout << "用户账号:" << it.second.u_account << " 用户密码:" << it.second.u_code << endl;}}system("pause");system("cls");goto FLAGa;}else if (select == '2') {cout << "请输入您想更改的账号（用户名）" << endl;string the_u_account;cin >> the_u_account;if (!this->Users.count(the_u_account)) {SetColorAndBackground(6,4);cout << "系统中没有该用户账号" << endl;SetColorAndBackground(7,0);}else {cout << "原密码:" << this->Users[the_u_account].u_code << endl;cout << "请输入修改后的密码！......" << endl;cin >> this->Users[the_u_account].u_code;this->Save_Users();cout << "修改完成！！！" << endl;}system("pause");system("cls");goto FLAGa;}else if (select == '3') {cout << "请输入您想初始化的账号（用户名）" << endl;string the_u_account;cin >> the_u_account;if (!this->Users.count(the_u_account)) {SetColorAndBackground(6,4);cout << "系统中没有该用户账号" << endl;SetColorAndBackground(7,0);}else {SetColorAndBackground(1,0);cout << "原密码: " << this->Users[the_u_account].u_code << endl;cout << "初始化ing......" << endl;this->Users[the_u_account].u_code="123456";this->Save_Users();cout << "修改完成！！！ " << endl;SetColorAndBackground(7,0);}system("pause");system("cls");goto FLAGa;}else if(select=='4'){cout<<"请输入您要删除的用户账号..."<<endl;string t_u_account;cin>>t_u_account;if(!this->Users.count(t_u_account)){cout<<"系统无该用户账号,本次操作自动视为取消"<<endl;system("pause");system("cls");goto FLAGa;}else{this->Users.erase(t_u_account);Sleep(500);cout<<"删除成功!"<<endl;system("pause");system("cls");goto FLAGa;}}else if(select=='5'){SetColorAndBackground(2,0);cout<<" ***********************************************图书总览******************************************************\\n";cout<<" -------------------------------------------------------------------------------------------------------------\\n";cout<<" 书名 ISSN/IBSN 作者名 分类号 现有数量 \\n";cout<<" -------------------------------------------------------------------------------------------------------------\\n";for (Book it : this->tmbook) {cout<<"《"<<it.Book_name<<"》"<<" "<<it.IBSN<<" "<<it.writer<<" "<<it.classify<<" num:"<<it.cur_num<<endl;}SetColorAndBackground(7,0);system("pause");system("cls");goto FLAGa;}else if (select == '6') {cout << "请输入图书名称" << endl;string Book_name;cin >> Book_name;//auto it = this->myFind_use_name(this->tmbook, Book_name);auto it=find_if(this->tmbook.begin(),this->tmbook.end(),help_find(Book_name));if (it == this->tmbook.end()) {SetColorAndBackground(6,4);cout << "图书馆暂未存入该图书" << endl;SetColorAndBackground(7,0);}else {cout << "请重新输入图书信息" << endl;cout << "IBSN/ISSN...." << endl;cin >> it->IBSN;cout << "作者..." << endl;cin >> it->writer;cout << "分类号" << endl;cin >> it->classify;cout<<"现有图书数量..."<<endl;cin>>it->cur_num;this->Save_Book();cout << "图书信息修改完成" << endl;}system("pause");system("cls");goto FLAGa;}else if (select == '7') {cout<<"请录入新加图书的信息...."<<endl;string t_name;string t_ISBN;string t_writer;string t_classfiy;int t_cur_num;cout << "图书书名...." << endl;cin >> t_name;auto it = find_if(this->tmbook.begin(),this->tmbook.end(),help_find(t_name));if(it!=this->tmbook.end()){SetColorAndBackground(1,6);cout<<"图书馆内已有同名书籍，请选择更改图书信息或者在书名后加注释"<<endl;SetColorAndBackground(7,0);}else{cout << "ISBN/ISSN码..." << endl;cin >> t_ISBN;cout << "作者/编者/译者..." << endl;cin >> t_writer;cout << "分类号..." << endl;cin>> t_classfiy;cout<< "加入现有数目..."<<endl;cin>>t_cur_num;Book tmp(t_name, t_ISBN, t_writer, t_classfiy,t_cur_num);this->tmbook.emplace_back(tmp);this->Save_Book();cout << "图书信息保存成功" << endl;}system("pause");system("cls");goto FLAGa;}else if (select == '8') {cout << "请输入您要彻底删除的图书名称！" << endl;string t_name;cin >> t_name;vector<Book>::iterator it;for (it = this->tmbook.begin(); it != this->tmbook.end(); it++)if (it->Book_name == t_name)break;if (it == this->tmbook.end()){SetColorAndBackground(0,4);cout << "未找到该名称的图书，操作自动撤销" << endl;SetColorAndBackground(7,0);}else {this->tmbook.erase(it);this->Save_Book();cout << "图书删除完毕" << endl;}system("pause");system("cls");goto FLAGa;}else if (select == '9') {this->Search_thebook();system("pause");system("cls");goto FLAGa;}else if(select=='A'){if(this->Borrow_memo.empty())cout<<"暂图书借阅记录！"<<endl;else{cout<<"图书借阅记录如下..."<<endl;for(auto it:this->Borrow_memo)cout<<it<<endl;}system("pause");system("cls");goto FLAGa;}else if(select=='B'){if(this->Back_memo.empty()){cout<<"暂无图书归还记录!"<<endl;}else{cout<<"图书归还记录如下..."<<endl;for(auto it:this->Back_memo)cout<<it<<endl;}system("pause");system("cls");goto FLAGa;}else if(select=='C'){cout<<"确定要清空图书借阅记录吗? "<<endl;cout<<"【非0】确认 【输入0】取消"<<endl;char jd='0';cin>>jd;Sleep(500);if(jd!='0'){this->Borrow_memo.clear();this->Save_Borrow_memo();cout<<"已完成清空！"<<endl;}Sleep(500);system("pause");system("cls");goto FLAGa;}else if(select=='D'){cout<<"确定要清空图书归还记录吗? "<<endl;cout<<"【非0】确认 【输入0】取消"<<endl;char jd='0';cin>>jd;Sleep(500);if(jd!='0'){this->Back_memo.clear();this->Save_Back_memo();cout<<"已完成清空！"<<endl;}Sleep(500);system("pause");system("cls");goto FLAGa;}else if (select == 'E') {this->Admins.erase(this->Landed_accout);this->Save_Admins();SetColorAndBackground(1,6);cout << "账号已成功注销.稍后系统自动退出" << endl;SetColorAndBackground(0,7);Sleep(500);exit(0);}else if (select == 'F') {cout << "请输入您更改后的密码" << endl;string new_code;cin >> new_code;this->Admins[this->Landed_accout].a_code = new_code;this->Save_Admins();cout << "修改成功！" << endl;system("pause");system("cls");goto FLAGa;}else if (select == '0') {this->myover();}else if(select=='G'){for (pair<string, Administrator> it : this->Admins) {cout << "管理员账号:" << it.second.a_account << " 管理员密码:" << it.second.a_code << endl;}system("pause");system("cls");goto FLAGa;}else if(select=='H'){cout<<"*********请输入您要添加的管理员账号>>>>"<<endl;string t_a_account;cin>>t_a_account;if(this->Admins.count(t_a_account)){cout<<"已有该账号的管理员，本次操作视为取消"<<endl;system("pause");system("cls");goto FLAGa;}else{cout<<"*********请输入您要添加的管理员的密码>>>>"<<endl;string t_a_code;cin>>t_a_code;Administrator tmp(t_a_account,t_a_code);this->Admins[t_a_account]=tmp;this->Save_Admins();cout<<"添加成功."<<endl;system("pause");system("cls");goto FLAGa;}}else if(select=='I'){cout<<"*********请输入您要删除的管理员账号>>>>"<<endl;string t_a_account;cin>>t_a_account;if(!this->Admins.count(t_a_account)){cout<<"不存在该账号的管理员，本次操作视为取消"<<endl;system("pause");system("cls");goto FLAGa;}else{cout<<">>>>>开始删除....>>>>"<<endl;Sleep(500);this->Admins.erase(t_a_account);this->Save_Admins();system("pause");system("cls");goto FLAGa;}}else {SetColorAndBackground(0,6);cout << "选项输入错误，请重新输入" << endl;SetColorAndBackground(0,7);system("pause");system("cls");goto FLAGa;}}//--------------------------------开始用户的操作void Labray::UserStart() {FLAGu:SetColorAndBackground(0,7);cout << " H_图书管理系统——用户模式 " << endl;cout << " ----------------------------- " << endl;cout << " *******用户功能菜单********* " << endl;cout << " ---------------------------------" << endl;cout << " 图书操作: " << endl;cout << " 》》1:游览全部图书 " << endl;cout << " 》》2.借阅图书 " << endl;cout << " 》》3.搜索图书 " << endl;cout << " 》》4.查看自己的图书借阅记录 " << endl;cout << " 》》5.查看自己的图书归还记录 " << endl;cout << " 》》6.部分归还图书 " << endl;cout << " 》》7.一键全部归还 " << endl;cout << " 个人类： " << endl;cout << " 》》8.注销账号 " << endl;cout << " 》》9.更改密码 " << endl;cout << " 其他: " << endl;cout << " 》》0.退出系统 " << endl;cout << " ---------------- " << endl;SetColorAndBackground(7,0);SetColorAndBackground(7,0);cout << "请输入操作选项！... " << endl;char ch;cin >> ch;if (ch == '1') {SetColorAndBackground(2,0);cout<<" ***********************************************图书总览******************************************************\\n";cout<<" -------------------------------------------------------------------------------------------------------------\\n";cout<<" 书名 ISSN/IBSN 作者名 分类号 现有数量 \\n";cout<<" -------------------------------------------------------------------------------------------------------------\\n";for (Book it : this->tmbook) {cout<<"《"<<it.Book_name<<"》"<<" "<<it.IBSN<<" "<<it.writer<<" "<<it.classify<<" num:"<<it.cur_num<<endl;}SetColorAndBackground(7,0);system("pause");system("cls");goto FLAGu;}else if (ch == '2') {cout << "您想借阅的图书书名.一人一次最多借一本" << endl;string t_name;cin >> t_name;auto it = find_if(this->tmbook.begin(),this->tmbook.end(),help_find(t_name));if (it != this->tmbook.end()) {cout<<"图书信息如下，请确认！"<<endl;cout<<"《"<<it->Book_name<<"》"<<" IBSN："<<it->IBSN<<" 作者："<<it->writer<<" 分类号："<<it->classify<<" num:"<<it->cur_num<<endl;Sleep(500);if(it->cur_num==0){cout<<"抱歉，这本书已经被借走了!"<<endl;system("pause");system("cls");goto FLAGu;}char jd='0';cout<<"请确认借阅..."<<endl;cout<<"|【输0】——放弃借阅|【非0】——确认借阅"<<endl;cout<<"请输入您的选择!"<<endl;cin>>jd;if(jd=='0'){cout<<"成功取消本次操作!"<<endl;system("pause");system("cls");goto FLAGu;}else{cout << "您已成功借得本书，可在借阅记录中查看" << endl;this->Users[Landed_accout].u_memo[t_name]++;string JL_borrow_memo="用户"+Landed_accout+"于"+this->getCur_time()+"借得图书《"+t_name+"》";this->Borrow_memo.push_back(JL_borrow_memo);it->cur_num--;this->Save_Book();this->Save_Borrow_memo();system("pause");system("cls");goto FLAGu;}}else{SetColorAndBackground(6,4);cout << "-------------------------"<<endl;cout << "抱歉。图书馆暂未收录本书" << endl;cout << "-------------------------"<<endl;SetColorAndBackground(0,7);system("pause");system("cls");goto FLAGu;}}else if (ch == '3') {this->Search_thebook();system("pause");system("cls");goto FLAGu;}else if (ch == '4') {if (this->Users[Landed_accout].u_memo.empty()) {cout << "您的借阅空空如也" << endl;}else {cout << "你的借阅记录如下" << endl;for (pair<string,int> it : this->Users[Landed_accout].u_memo) {cout <<"《"<<it.first<<"》" <<" "<<to_string(it.second) << endl;}}system("pause");system("cls");goto FLAGu;}else if(ch=='5'){if(this->Users[Landed_accout].u_back_memo.empty()){cout<<"您暂无归还记录！！"<<endl;}else{cout << "你的归还记录如下，欢迎继续借阅" << endl;for (pair<string,int> it : this->Users[Landed_accout].u_back_memo) {cout <<"《"<<it.first<<"》" <<" "<<to_string(it.second) << endl;}}system("pause");system("cls");goto FLAGu;}else if (ch == '6'){if (this->Users[Landed_accout].u_memo.empty()) {cout << "您的借阅还未借得书籍，无需归还" << endl;}else {cout << "你的借阅记录如下，请选择您要归还的书籍名称" << endl;for (pair<string,int> it : this->Users[Landed_accout].u_memo) {cout <<"《"<<it.first<<"》" <<" "<<to_string(it.second) << endl;}cout<<"请输入您要归还的书籍名称..."<<endl;string book_name;cin>>book_name;if(!this->Users[Landed_accout].u_memo.count(book_name)){cout<<"您尚未借得该图书，本次操作视为取消"<<endl;system("pause");system("cls");goto FLAGu;}cout<<"请输入你要归还的书籍数量..."<<endl;int book_num;cin>>book_num;if(this->Users[Landed_accout].u_back_memo[book_name]>book_num){cout<<"归还数量有误，本次操作视为取消"<<endl;system("pause");system("cls");goto FLAGu;}vector<Book>::iterator it =find_if(this->tmbook.begin(),this->tmbook.end(),help_find(book_name));if(it==this->tmbook.end()){cout<<"图书馆未存该图书的信息,输入错误，该操作视为自动撤销"<<endl;system("pause");system("cls");goto FLAGu;}else{it->cur_num+=book_num;this->Users[Landed_accout].u_memo[book_name]-=book_num;string JL_back_memo="用户"+Landed_accout+"于"+this->getCur_time()+"归还图书《"+book_name+"》"+to_string(book_num)+"本";this->Users[Landed_accout].u_back_memo[book_name]+=book_num;this->Back_memo.push_back(JL_back_memo);this->Save_Back_memo();this->Save_Book();cout<<"归还完毕!!!"<<endl;}}system("pause");system("cls");goto FLAGu;}else if(ch=='7'){cout<<"开始一键归还..."<<endl;for(auto it: this->Users[Landed_accout].u_memo){if(it.second>0){vector<Book>::iterator the_book =find_if(this->tmbook.begin(),this->tmbook.end(),help_find(it.first));if(the_book!=this->tmbook.end()){the_book->cur_num+=it.second;string JL_back_memo="用户"+Landed_accout+"于"+this->getCur_time()+"归还图书《"+it.first+"》"+to_string(it.second)+"本";this->Back_memo.push_back(JL_back_memo);this->Users[Landed_accout].u_back_memo[it.first]+=it.second;}}}this->Users[Landed_accout].u_memo.clear();Sleep(500);cout<<"一键归还完毕"<<endl;this->Save_Back_memo();this->Save_Book();system("pause");system("cls");goto FLAGu;}else if (ch == '8') {this->Users.erase(this->Landed_accout);this->Save_Users();cout << "账号已成功注销.系统自动退出" << endl;exit(0);}else if (ch == '9') {cout << "请输入您更改后的密码" << endl;string new_code;cin >> new_code;this->Users[this->Landed_accout].u_code = new_code;this->Save_Users();cout << "修改成功！" << endl;system("pause");system("cls");goto FLAGu;}else if (ch == '0') {SetColorAndBackground(4,6);cout<<"-----------------------------------------------------"<<endl;cout<<"退出系统需启用一键归还，要持续借书请向管理员线下申请."<<endl;cout<<"-----------------------------------------------------"<<endl;SetColorAndBackground(0,7);cout<<"是否继续。"<<endl;cout<<"【输0】--取消操作|【非0】--继续操作"<<endl;char jd='0';cin>>jd;Sleep(500);if(jd=='0'){cout<<"已取消本次操作."<<endl;Sleep(500);system("pause");system("cls");goto FLAGu;}else{cout<<"自动开始一键归还..."<<endl;for(auto it: this->Users[Landed_accout].u_memo){vector<Book>::iterator the_book =find_if(this->tmbook.begin(),this->tmbook.end(),help_find(it.first));if(the_book!=this->tmbook.end()){the_book->cur_num+=it.second;string JL_back_memo="用户"+Landed_accout+"于"+this->getCur_time()+"归还图书《"+it.first+"》"+to_string(it.second)+"本";this->Back_memo.push_back(JL_back_memo);}}this->Users[Landed_accout].u_memo.clear();Sleep(500);cout<<"一键归还完毕"<<endl;this->Save_Back_memo();this->Save_Book();this->myover();}}else {cout << "选项输入错误，请重新输入" << endl;system("pause");system("cls");goto FLAGu;}}
3️⃣main.cpp
#include "Labray.h"using namespace std;int main() {Labray H_labray;H_labray.Landing();return 0;}
4️⃣文件总览
【5】效果展示
1️⃣：开始界面
2️⃣：注册界面
3️⃣：管理员功能
4️⃣：用户功能
5️⃣：游览全部图书
6️⃣：搜索图书
7️⃣：借阅与归还图书
借阅：>>>
借阅记录：>>>
归还》》
记录》》》
退出：
8️⃣：管理员借阅/归还记录查看
【6】后记补充
- 1.关于分类号搜索的使用，用字符串截取，做匹配就能简单完成。由于样本给的分类号没有具体标准，所以我自创了一个，用它来对样本处理应该是不合适的。
- 2.我用了很多goto语句，这样可减少循环或者函数调用，对我自己看，是很方便的。【快乐自己，麻烦他人👻，大家还是老老实实用循环或者函数跳转】
- 3.我用了STL,主要是因为，高阶算法编不出我想多多了解一下STL，
- 4.在学习路上，免不了会遇到各种各样的诱惑——
没错，我打游戏去了，发现了一款名叫《饥荒》的游戏，就… - 5.欠下的功课是要慢慢补的~%?…,# *'☆&℃$︿★?，要成为｛技术大神｝，还要更加加油
- 虽然我还会受到各种诱惑勾引
